0) You look at the category. Nothing new. 1) You write a post, and post it. 2) while you write (and before you post), somebody else writes a post, maybe in a different thread, and posts it. 3) you look at the category again. It will say "10 new posts", and the latest post will actually be by you. But you haven't seen the other 10 posts, that were posted in the time between 0) and 3).

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